Hand controlled clutch and brake for tractors



June 5, 1951 c. F. MARTIN 2,555,417

HAND CONTROLLED CLUTCH AND BRAKE FOR TRACTORS Filed June 3. 1948 2Sheets-Sheet 1 CebaZ FMardz'n INVENTOR.

June 5, 1951 c. F. MARTIN HAND CONTROLLED CLUTCH AND BRAKE FOR TRACTORSFiled June 3, 1948 2 Sheets-Sheet 2 Patented June 5, 1951 HANDCONTROLLED CLUTCH AND BRAKE FOR TRACTORS 7 r Cebal F'. Martin,Gainsville, Ten. Application June 3, 1948, Serial No. 30,875

2 Claims. (01. 74-4 1) This invention relates to tractors and moreparticularly to a remote control arrangement for the clutch and brakethereof.

It is an object of the present invention to provide a remote controlconnection for tractors whereby the operator of the tractor can operatethe clutch and brake while standing up on the draw bar of the tractor orwhen standing on the ground as when the connection is being effectedwith a tractor drawn implement and whereby labor and time will be savedin efiecting the control of the tractor.

Other objects of the present invention are to provide a combined brakeand clutch operating mechanism adapted to be connected to the rear ofthe tractor to be operated from that point, which i of simpleconstruction, easy to apply upon the tractor and to be connected to theclutch and brake, inexpensive to manufacture, sturdy and efiicient inoperation.

For other objects and for a better understanding of the invention,reference may be had to the following detailed description taken inconnection with the accompanying drawing, in which Fig. 1 is a sideelevational view of the operating control parts mounted on the rear of atractor.

Fig. 2 is a top plan view of the parts of the tractor.

Fig. 3 is a perspective view of the mounting plate adapted to beconnected to the rear axle housing.

Fig. 4-. is a perspective view of one of the guide clips.

Fig. 5 is a rear elevational view of the control parts.

Fig. 6 is a perspective view of one of the arms connected to theadjusting lever.

Fig. '7 is a fragmentary and perspective view of the clutch operatingrod.

Fig. 8 is a perspective View of the link which is connected to thebrake.

Fig. 9 is a sectional view taken on line 9-9 of Fig. 5.

Fig. 10 is a perspective view of the link which is connected between theadjusting arm and the clutch push rod.

Referring now to the figures, l5 represents a tractor having a rear axlehousing I5 on which there is mounted a plate l6 having lug I1 and I8adapted to be connected to the bolts on the rear axle housing whereby tosupport the plate in a vertical position. Mounted on this plate is handoperating lever l8. The lever l8 has an opening in its lower end throughwhich passes a detent device I 9 that is adapted to cooperate withquadrant teeth 2| formed in a slot in the plate IS. The pivot connectionof the lever l8 with the plate I6 is indicated at 22.

Longitudinally adjustable along the top of the tractor is a pusher rod23 which has a roller24 on it forward end adapted to engage with clutchlever 25 to cause its operation as the rod 23 is thrust forward by theengagement of the lever l8 with the rear end of the rod 23. The rodrests upon a shelf 21 at its rear end and is held thereupon by brackets29 and 30 which are fastened to the top of the tractor body at differentlocations thereon and which are shown in perspective in Fig. 4.

Depending from the rod 23 is a lug 32 to which a link 34 is connected toeffect the pushing of the rod 23. The link 24 is connected to the leverH3 at 35. As the lever I 8 i pulled rearwardly about its pivot 22, thelower end of the lever will be moved forwardly and the link 34 will pushthe rod 23 forwardly whereby to engage the clutch lever and cause theclutch to be disengaged. After the clutch has been disengaged to aslight extent, an arm 31 on the lever l8 will engage the end of a link38 which has a lost motion connection as indicated at 39 with the link34 and the link 38 is connected to brake arm 39 whereby to cause thebrake to be engaged. The detent device |9 will retain the lever I81 inits adjusted position on the quadrant 2|. When it is desired to releasethe brake and to have the engagement of the clutch, the detent I9 isreleased and the lever arm I8 is pushed forwardly. This lever arm IB isaccessible by the operator from a draw bar or from the ground in rear ofthe tractor. The operator does not have to sit on the tractor to operatethese parts.

0n the opposite side of the lever l8 from the detent is a detent 4|which is pivoted to pin 22. A spring 44 extends between the pin 22 andthe outer end of the detent 4| whereby to aid and assist the return ofthe parts when the detent device I9 is released.

The helf 21 is disposed on the upper end of the mounting plate IS. Thepin 35 travels in the slot 31 on the mounting plate l6.

While various changes may be made in the detail construction, it shallbe understood that such changes shall be within the spirit and scope ofthe present invention as defined by the appended claims.

1. In a control arrangement for a tractor ineluding a rear axle housing,a clutch lever and a brake arm, a plate adapted to be connected to saidhousing, there being a slot arranged in said plate, a plurality of teethprojecting into said slot, a hand lever pivotally connected to saidplate, a detent device carried by said hand lever and mounted formovement into and out of engagement with said teeth, a shelf secured tothe upper end of said plate, a pusher rod slidably supported on saidshelf and having a roller on one end thereof adapted to engage with theclutch lever, a bracket slidably connecting said pusher rod to saidplate, a lug depending .afromlsaidtrod', a first link having one endpivotally connected to said lug and its other end pivotally connected tosaid hand lever, and asecond linkhavingon'e end connected to the tractorbrake arm and: its other end. pi-votally connected to said first link.

2. In a control arrangement for a tractor including a rear axle housing,a clutch lever and "a brake-arma plate adapted to b'e connected to saidho'using, there being a:slot arranged in said plate, a plurality ofteeth projecting into said slot, a *hand lever pivotally connected tosaid plate, a detent device 'carried b said ihandilever and mounted formovement'into and outof engagement with said teeth, a shelf 'securedtothe upper end of said plate, a pusher rod slidably supported on'saidshelf iandhaving 'a roller on one end thereof adapted to engage with theclutch lever, a bracket slidably connecting said pusher rod to saidplate, a lug depending from said rod, a first link having one endpivotally connected to said lug and its other end pivotally connected tosaid hand lever, a second link having one end connected to the tractorbrake "arm and its other end pivotally connected to said first link, and

:springimeans on the opposite 'si'de of said plate from saidlinks-operatively connecting-said hand lever with said detent.

CEBAL F. MARTIN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

